For example
In imagine song chords:
This is the structure in the chorus that is repeated four times. The E chord looks out of place, and indeed it is very unusual. The song would not sound vastly different if the E was not there at all, but of course, its that extra touch of genius that makes the difference. Very unusual reliance on just two chords, C and F for most of the verse. When it breaks, we see the classic falling fifth pattern, but not landing on the key note, instead skipping to F at the start of the chorus. The chorus repeats the same pattern with the surprising inclusion of the E7 chord which provides a series of “interrupted” cadences that never resolve to A where we would expect.